The BGP Instability Report

The BGP Instability Report is updated daily. This report
was generated on 16 May 2012 06:15 (UTC+1000)

50 Most active ASes for the past 7 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	4755	157689	5.60%	1621	97.28	TATACOMM-AS TATA Communications formerly VSNL is Leading ISP
2	9829	107167	3.80%	1283	83.53	BSNL-NIB National Internet Backbone
3	17908	100815	3.58%	829	121.61	TCISL Tata Communications
4	8402	66827	2.37%	2143	31.18	CORBINA-AS OJSC "Vimpelcom"
5	17488	41312	1.47%	730	56.59	HATHWAY-NET-AP Hathway IP Over Cable Internet
6	9583	32223	1.14%	1163	27.71	SIFY-AS-IN Sify Limited
7	45528	29505	1.05%	508	58.08	TDN Tikona Digital Networks Pvt Ltd.
8	7029	28899	1.03%	3569	8.10	WINDSTREAM - Windstream Communications Inc
9	24560	27473	0.97%	1027	26.75	AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
10	12479	26842	0.95%	679	39.53	UNI2-AS France Telecom Espana SA
11	32528	25208	0.89%	11	2291.64	ABBOTT Abbot Labs
12	25620	23726	0.84%	184	128.95	COTAS LTDA.
13	17439	22113	0.78%	193	114.58	NETMAGIC-AP Netmagic Datacenter Mumbai
14	8452	20836	0.74%	1310	15.91	TE-AS TE-AS
15	18207	20742	0.74%	506	40.99	YOU-INDIA-AP YOU Broadband & Cable India Ltd.
16	24193	20018	0.71%	281	71.24	SIFY-IN Sify Limited Service Provider India
17	17762	18642	0.66%	251	74.27	HTIL-TTML-IN-AP Tata Teleservices Maharashtra Ltd
18	13118	18267	0.65%	48	380.56	ASN-YARTELECOM OJSC Rostelecom
19	5800	18196	0.65%	258	70.53	DNIC-ASBLK-05800-06055 - DoD Network Information Center
20	7633	17857	0.63%	198	90.19	SOFTNET-AS-AP Software Technology Parks of India - Bangalore
21	1785	17751	0.63%	1907	9.31	AS-PAETEC-NET - PaeTec Communications, Inc.
22	17465	17523	0.62%	220	79.65	ASIANET Cable ISP in India
23	10620	15249	0.54%	1869	8.16	Telmex Colombia S.A.
24	10201	13991	0.50%	362	38.65	DWL-AS-IN Dishnet Wireless Limited. Broadband Wireless
25	45769	13841	0.49%	213	64.98	DVOIS-IN D-Vois Broadband Pvt Ltd
26	17803	13118	0.47%	603	21.75	BSES-AS-AP BSES TeleCom Limited
27	24722	13026	0.46%	72	180.92	BABILON-AS Babilon-T
28	26615	12651	0.45%	903	14.01	Tim Celular S.A.
29	45271	12483	0.44%	255	48.95	ICLNET-AS-AP 5th Floor, Windsor Building, Off: CST Road
30	8151	12465	0.44%	1494	8.34	Uninet S.A. de C.V.
31	10199	12438	0.44%	113	110.07	TATA-AS Tata Communications Ltd
32	17447	12354	0.44%	122	101.26	NET4INDIA Net4India Ltd.
33	18747	12260	0.44%	389	31.52	IFX-NW - IFX Communication Ventures, Inc.
34	45820	11482	0.41%	186	61.73	TTSL-MEISISP Tata Teleservices ISP AS
35	383	11333	0.40%	109	103.97	AFCONC-BLOCK1-AS - 754th Electronic Systems Group
36	11664	10961	0.39%	259	42.32	Techtel LMDS Comunicaciones Interactivas S.A.
37	7552	10822	0.38%	1179	9.18	VIETEL-AS-AP Vietel Corporation
38	36167	10328	0.37%	104	99.31	NETRIPLEX01 - NETRIPLEX LLC
39	44798	9998	0.35%	1	9998.00	PERVOMAYSK-AS PP "SKS-Pervomaysk"
40	17974	9971	0.35%	1925	5.18	TELKOMNET-AS2-AP PT Telekomunikasi Indonesia
41	2	9281	0.33%	112	82.87	DCN-AS - University of Delaware
42	18229	9070	0.32%	98	92.55	CTRLS-AS-IN CtrlS Datacenters Ltd.
43	28573	8999	0.32%	1904	4.73	NET Servicos de Comunicao S.A.
44	55441	8845	0.31%	87	101.67	TATA-DOCOMO-AS-AP D 26/2 TTC INDUSTRIAL AREA MIDC SANPADA
45	10029	8783	0.31%	270	32.53	SPECTRANET FIRST FIBRE BROADBAND NETWORK IN NEW DELHI, INDIA
46	11139	8742	0.31%	556	15.72	CWRIN CW BARBADOS
47	1273	8441	0.30%	298	28.33	CW Cable and Wireless Worldwide plc
48	36915	8109	0.29%	34	238.50	AFOL-KE-AS
49	27738	8102	0.29%	550	14.73	Ecuadortelecom S.A.
50	9625	8028	0.28%	103	77.94	PACIFIC-INTERNET-INDIA-ASN Pacific Internet India Pvt. Ltd.
Total		1164802	41.32%

50 Most active ASes for the past 7 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	44798	9998.0	0.35%	1	9998	PERVOMAYSK-AS PP "SKS-Pervomaysk"
2	32528	6302.0	0.89%	11	25208	ABBOTT Abbot Labs
3	16652	5802.0	0.21%	1	5802	RISEUP - Riseup Networks
4	57343	5522.0	0.20%	1	5522	DIGIMAT-AS Digimat s.r.l.
5	3	1998.0	0.07%	1	1998	MIT-GATEWAYS - Massachusetts Institute of Technology
6	20775	1922.0	0.07%	1	1922	GETIT GETIT Internet GmbH
7	7219	1547.0	0.05%	1	1547	ASNTULIX - Tulix Systems, Inc.
8	36948	994.5	0.07%	2	1989	KENIC
9	55665	939.0	0.03%	1	939	STMI-AS-ID PT Sampoerna Telemedia Indonesia
10	17408	902.0	0.03%	38	902	ABOVE-AS-AP AboveNet Communications Taiwan
11	40677	898.5	0.06%	2	1797	GLOBALAIR-COM - Globalair.com
12	21452	878.0	0.03%	1	878	skannet-ibadan
13	13263	807.0	0.06%	23	1614	HAYATNET-AS HayatNet Bilgi ve Iletisim Hizmetleri A.S
14	29126	763.0	0.03%	1	763	DATIQ-AS Datiq B.V.
15	19045	756.0	0.05%	2	1512	DIRECTCOM - Direct Communications Cable LLC
16	9821	718.0	0.03%	1	718	DOST-PH-AP Department of Science and Technology
17	32890	648.6	0.16%	11	4540	BTC-AS-1 - Beehive Telephone Company, Inc.
18	49182	601.0	0.04%	4	1202	BTENGAGEIT BT ENGAGE IT Limited
19	42281	556.0	0.02%	1	556	RACHFAHL-IT-AS Rachfahl IT-Solutions GmbH & Co.KG
20	1355	554.0	0.02%	3	554	AHMSI-HQDC - American Home Mortgage Servicing, Inc.
21	5430	533.2	0.15%	9	4266	FREENETDE freenet Datenkommunikations GmbH
22	48068	508.0	0.02%	3	508	VISONIC Visonic Ltd
23	33074	505.0	0.02%	1	505	ISC-NBO1 Internet Systems Consortium, Inc.
24	57767	489.0	0.02%	1	489	RTTC-AS Federal State-owned Enterprise Russian Television and Radio Broadcasting Network
25	27169	477.0	0.02%	2	477	TRIDENTAS - Trident Systems, Inc.
26	4658	474.5	0.03%	10	949	NETFRONT-AS Netfront Information Technology Limited,
27	49072	474.0	0.02%	1	474	APSUARA-AS TCA Apsuara Ltd.
28	38857	462.0	0.03%	2	924	ESOFT-TRANSIT-AS-AP e.Soft Technologies Ltd.
29	37349	458.0	0.03%	2	916	Aptus
30	20799	443.8	0.17%	11	4882	DATANET-AS Datanet.co.uk Ltd
31	25911	437.0	0.02%	1	437	TALISMAN-CH3 - TALISMAN ENERGY INC.
32	57201	429.0	0.02%	1	429	EDF-AS Estonian Defence Forces
33	37115	427.0	0.02%	1	427	TMP-UG
34	44257	386.5	0.03%	9	773	TNGS-SOUTH JSC Regional Technical Centre
35	37086	385.0	0.01%	1	385	SOCATEL-AS
36	13118	380.6	0.65%	48	18267	ASN-YARTELECOM OJSC Rostelecom
37	12479	357.9	0.95%	679	26842	UNI2-AS France Telecom Espana SA
38	28477	320.8	0.11%	10	3208	UNIVERSIDAD AUTONOMA DEL ESTADO DE MORELOS
39	57912	284.0	0.01%	1	284	ASYST-AS Asyst EOOD
40	17815	281.0	0.03%	3	843	QUESTDIAGNOSTICS-AS-IN Quest Diagnostics India
41	54525	267.0	0.01%	1	267	AGT01 - APPLIED GLOBAL TECHNOLOGIES, LLC
42	37420	262.0	0.02%	2	524	UNIV-JOS
43	24080	261.0	0.01%	1	261	ROSEITS-AS-IN Rose IT Solutions
44	38594	257.0	0.01%	1	257	INNODATA-NDA-AS-IN Innodata-ISOGEN, Inc
45	48435	251.0	0.01%	1	251	RAHOVA-AS Pro Net-Rahova SRL
46	50457	251.0	0.04%	10	1004	ITA It-afdelingen a/s
47	28717	249.3	0.09%	10	2493	ZENSYSTEMS-AS Zen Systems
48	15859	248.0	0.01%	1	248	DSRACK DSRack ApS
49	44134	248.0	0.02%	2	496	BOLIGNET-AS Bolignet Autonomous System
50	3	248.0	0.01%
Total		54162.2	5.06%

50 Most active Prefixes for the past 7 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	109.161.64.0/19	18126	0.61%	13118 -- ASN-YARTELECOM OJSC Rostelecom
2	130.36.34.0/24	12599	0.42%	32528 -- ABBOTT Abbot Labs
3	130.36.35.0/24	12599	0.42%	32528 -- ABBOTT Abbot Labs
4	91.202.212.0/22	9998	0.34%	44798 -- PERVOMAYSK-AS PP "SKS-Pervomaysk"
5	41.43.147.0/24	9869	0.33%	8452 -- TE-AS TE-AS
6	62.36.252.0/22	8056	0.27%	12479 -- UNI2-AS France Telecom Espana SA
7	62.36.249.0/24	6465	0.22%	12479 -- UNI2-AS France Telecom Espana SA
8	62.36.241.0/24	6064	0.20%	12479 -- UNI2-AS France Telecom Espana SA
9	62.36.210.0/24	5911	0.20%	12479 -- UNI2-AS France Telecom Espana SA
10	199.254.238.0/24	5802	0.19%	16652 -- RISEUP - Riseup Networks
11	91.231.179.0/24	5522	0.19%	57343 -- DIGIMAT-AS Digimat s.r.l.
12	194.63.9.0/24	5190	0.17%	1273 -- CW Cable and Wireless Worldwide plc
13	182.64.0.0/16	4605	0.15%	24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
14	202.56.215.0/24	3622	0.12%	24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
15	69.54.109.0/24	2863	0.10%	7018 -- ATT-INTERNET4 - AT&T Services, Inc.
16	115.170.128.0/17	2455	0.08%	4847 -- CNIX-AP China Networks Inter-Exchange
18	217.194.224.0/20	1922	0.06%	20775 -- GETIT GETIT Internet GmbH
19	215.65.61.0/24	1812	0.06%	5800 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center
20	205.175.209.0/24	1794	0.06%	40677 -- GLOBALAIR-COM - Globalair.com
21	208.54.82.0/24	1633	0.05%	701 -- UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
22	38.101.217.0/24	1547	0.05%	7219 -- ASNTULIX - Tulix Systems, Inc.
23	221.120.230.0/24	1478	0.05%	17557 -- PKTELECOM-AS-PK Pakistan Telecommunication Company Limited
24	69.31.106.0/23	1459	0.05%	35994 -- AKAMAI-AS - Akamai Technologies, Inc.
25	128.74.28.0/24	1398	0.05%	8402 -- CORBINA-AS OJSC "Vimpelcom"
26	23.65.27.0/24	1373	0.05%	35994 -- AKAMAI-AS - Akamai Technologies, Inc.
27	23.2.6.0/23	1373	0.05%	35994 -- AKAMAI-AS - Akamai Technologies, Inc.
28	200.119.200.0/21	1315	0.04%	25620 -- COTAS LTDA.
29	190.186.88.0/21	1314	0.04%	25620 -- COTAS LTDA.
30	190.186.28.0/22	1312	0.04%	25620 -- COTAS LTDA.
31	201.222.125.0/24	1295	0.04%	25620 -- COTAS LTDA.
32	201.222.69.0/24	1295	0.04%	25620 -- COTAS LTDA.
33	201.222.68.0/24	1295	0.04%	25620 -- COTAS LTDA.
34	201.222.99.0/24	1295	0.04%	25620 -- COTAS LTDA.
35	201.222.66.0/24	1295	0.04%	25620 -- COTAS LTDA.
36	190.186.80.0/24	1294	0.04%	25620 -- COTAS LTDA.
37	190.186.40.0/24	1294	0.04%	25620 -- COTAS LTDA.
38	205.94.64.0/20	1222	0.04%	3475 -- DNIC-AS-03475 - Navy Network Information Center (NNIC)
39	95.129.188.0/22	1200	0.04%	49182 -- BTENGAGEIT BT ENGAGE IT Limited
40	198.32.67.0/24	1195	0.04%	36948 -- KENIC
41	144.105.244.0/23	1152	0.04%	6034 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center
42	148.208.231.0/24	1045	0.04%	8151 -- Uninet S.A. de C.V.
43	148.208.230.0/24	1045	0.04%	8151 -- Uninet S.A. de C.V.
44	200.119.192.0/21	1001	0.03%	25620 -- COTAS LTDA.
45	190.186.184.0/21	1000	0.03%	25620 -- COTAS LTDA.
46	190.186.176.0/21	1000	0.03%	25620 -- COTAS LTDA.
47	202.81.224.0/19	947	0.03%	4658 -- NETFRONT-AS Netfront Information Technology Limited,
48	103.10.148.0/24	939	0.03%	55665 -- STMI-AS-ID PT Sampoerna Telemedia Indonesia
49	80.250.32.0/22	915	0.03%	21452 -- skannet-ibadan 37106 -- ODUA-AS
50	46.20.194.0/23	908	0.03%	24722 -- BABILON-AS Babilon-T
Total		164106	5.46%

7 Day BGP Profile: 9-May-2012 00:00 - 15-May-2012 23:59 (UTC+1000)

Number of BGP Update Messages:	1050445
Number of Prefix Updates:	2818123
Number of Prefix Withdrawals:	165279
Average Prefixes per BGP Update:	2.84
Average BGP Update Messages per second:	1.52
Average Prefix Updates per second:	4.32
Peak BGP Update Message Rate per second:	1434	(01:39:30 Thu, 10-May-2012)
Peak Prefix Update Rate per second:	1153	(22:00:43 Tue, 8-May-2012)
Peak Prefix Withdraw Rate per second:	5361	(01:25:58 Thu, 10-May-2012)
Prefix Count:	420746
Updated Prefix Count:	175403
Stable Prefix Count:	245343
Origin AS Count:	41122
Updated Origin AS Count:	21103
Stable Origin AS Count:	20019
Unique Path Count:	209873
Updated Path Count:	129870
Stable Path Count:	80003

Hourly Average of Per-Second Updated and Withdrawn Prefix Rate

Hourly Peak of Per-Second Updated and Withdrawn Prefix Rate

Hourly Average Per-Second Updated Prefix Rate by Update Type

Hourly Peak of Per-Second Updated Prefix Rate by Update Type

BGP Table Activity

Cumulative Distribution of per-Prefix and per-AS Updates

Notes

The data has been gathered using a single eBGP peering with AS 131072. The observations of BGP path change are relative to this observation point. The updates are generated by a Quagga BGP implementation providing a timestamped log of incoming update messages. The timezone of this monitoring point is UTC+1000. Updates are processed on a 24 hour cycle.